Acid dipping

[McVities]

I've recently bought a Saab 900 that is in need of a little tlc, and am being tempted by the (time saving) thought of getting it totally stripped down and the bodyshell acid dipped as opposed to removing all the rust and muck by hand. The company I've looked at will even galvanise and primer the shell afterwards too.
However, I have heard rumours that the neutralising chemicals used are less effective at penetrating the seams than the corrosives used to start with....leaving acid etc eating away at the seams isn't high on my list of priorities.
Does anyone have any info on acid dipping or has anybody actually had it done? Would be good to know a little more before I consider spending lots of cash.

Thanks
Rich

[Nico G]

You needn't get the shell acid dipped if you are concerned about the continued effects of the acid; You could just buzz it back to bare metal and do the body work which is necessary and then get the shell 'cleaned', phosphated and e-coated. This is roughly what a new car shell would see and non harmfull acid goes near it this way.

There's a guy on a BMW forum I frequent who has had a Sport Evo shell ecoated from scratch as part of a complete restoration (obviously!) He didn't intend to go this far but one bit of rot found led to another, and another and he didn't want to keep having to strip and sort bits and pieces out ad-infinitum, so bit the bullet so to speak and got it properly sorted! I'll try to root out the link which contains the name of the company he used. I gather he was very impressed with their work...

Cheers - Nick